Web perfecting rotary printing press



June 8, 1937. H. M. BARBER WEB PERFECTING ROTARY PRINTING PRESS Filed Feb. 3, 1936 3 Sheets-Sheet 1 ATTORNEYS June 8, 1937. r BARBER- 2,083,112

WEB PERFECTING ROTARY PRINTING PRESS Filed Feb. 3, 1936 5 Sheets-Sheet 2 INVENTOR M75? ATTORNEYS June 8, 1937. H. M. BARBER WEB PEHFECTING ROTARY PRINTING PRESS Filed Feb. 5, 1936 3 Sheets-Sheet 3 INVENTOR ATTO R N EYS Patented .Fune 8, i937 iTED STATES WEB PERFECTING ROTARY PRINTING PRESS Howard M. Barber, Pawcatuck, Conn, assignor to. C. B. Cottrcll & Sons Company, Westerly, 3.1., a corporation of Delaware Application February 3, 1936, Serial No. 62,072"

6 Claims. (01. 101-418) in high speed web perfecting rotary printing presses where quick drying inks and ink drying units are employed in connection with the web printing units, it is most important that the several units be so located with respect to one another as to produce the best possible results with a minimum amount of space and a minimum travel of the web.

This invention comprises, enerally, two printing units, two drying units and means for passingtsthe web through said printing and drying uni This invention more specificallycomprises first and second printing units, first and second drying units oflset therefrom at right angles thereto and means for passing the web through said printing units in the line of the press .and through said drying units laterally with respect to the press.

Practical embodiments of my invention are represented in the accompanying drawings, in

I which Big. 1 represents adiagrammatic top plan view of a double two color press embodying my invention, and'means for removing the vapors rising from the heating cylinders of the drying units being omitted;

Fig. 2 represents a diagrammatic longitudinal vertical section, taken in the plane of the line IIII of Fig. 1, looking in the direction of the by 2,1 and the inking mechanisms by 4 and 5 respectively.

The second printing unit is herein shown as also adapted to print in two colors, the impression cylinder being denoted by 6,,the form cylinders by land 8 and the inking mechanisms by t) and i0 respectively.

The first dryingunit isherein shown as comprising a large heating cylinder H and two small cooling cylinders i2 and I3 respectively. A pipe 66' serves to introduce a heating medium, as steam, into the cylinder II, and pipes i5 and it serve to introduce a cooling medium, as water, into the cylinders i2 and I3 respectively.

The second drying unit is herein shown as comprising a large heating cylinder I! and two small cooling cylinders 08 and I9 resp'ectively.

A pipe 20 serves to introduce a heating medium,v

as steam, into the cylinder i1, and pipes 2| and 22 serve to introduce a cooling medium, as water, into the cylinders i8 and i9 respectively.

These two drying units ,are ofiset from and located at right anglesto the printing units.

A turning bar 23 is located in position to direct the web laterally from the first printing unit to the first drying unit, and a second turning bar 24 is located in position to direct the web back into alinement with the press before the web is passed to the second or perfecting printing unit.

A turning bar 25 is located in position to direct the web laterally from the second printing unit to the second drying unit, and a second turning bar 26 is located in position to direct the web back into alinement with thepress before the web is passed to a predetermined point for future operations.

The web may be passed through the press as follows:

The unprinted web passes from the web supply roll 21 around guide rolls 28, 29, 30, 3i,.32 to and around the impression cylinder I of the first A printing unit. From thence the web passes around the turning bar 23 and under the guide roll 33 to and around the heating cylinder 'll of the first drying unit. From thence the web passes around the cooling cylinder l2, guide roll 34, cooling cylinder l3 and guide rolls 35, 36, 31 and 38 to and around the turning bar 24 for bringing the web back into line with the press. The web then passes around the guide roll 39 and compensating roll '40 to and around the impression cylinder 6 of the second or perfecting printing unit, located above the first printing unit. The

web then passes over the guide rolls 4|, 42 to I and around the heating cylinder ll of the second drying unit. From thence the web passes around the cooling cylinder [8, guide roll 43 and cooling cylinder l9 to and around the guide rolls 44, 45 to the turning bar 26 to again bring the web into line with the press. The web may then be led over the guide roll 46 to a predetermined point for further operations, as cutting, folding, stacking, etc. i

Instead of passing the perfected web back into the press from the second drying unit the web may be passed'directly from the said drying unit to a predetermined point for further operations as indicated by dot and dash lines in Fig. 4..

The heating cylinders of' the twodrying units may be provided with suitable means for, removing the vapors which arisefrom the inks as the web passes around said heating cylinders. In the present instance I have shown blowers I1, 48 with their hoods 49, 50 partially enclosing the heating cylinders H, H respectively, and exhaust pipes 5|, 52.

It will be understood that the several units may be driven by any well known or approved means, not shown herein, and that the path of the web may be varied to suit different requirements.

It will also be seen that the path of the web is such that the freshly printed side of the web, after it is dried by each drying unit, will not be again subjected to the heat rising from the heating cylinder by said unit.

It will also be seen that I have provided an arrangement of the several-units whereby the inks on the freshly printed sides o'f'the web may be thoroughly dried with-a minimum travel of the web, the form cylinders and their inking mechanisms of the two printing units being so positioned that ready access thereto is obtained.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiments "herein shown and described.-

What I claim is:

1. In a web perfecting rotary printing press, first and second printing units in line with the press, two drying units comprising heating and cooling cylinders located out of line with the press, and means for passing the web through said printing and drying units.

2. In a web perfecting rotary printing press, first and second printing units'arranged one above the other in line with the press, two drying units comprising heating and cooling cylinders located'out of line with the press, and means for passing the web through said printing and drying units.

3. In a web perfecting rotary printing press, first and second printing units in line with the press, two drying units comprising heating and cooling cylinders located out of line with the press at right angles thereto, and means for passing the web through said printing and drying units.

4. In a web perfecting rotary printing press, first and second printing units arranged one above the other in line with the press, two drying units comprising heating and cooling cylinders located out of line with the press at right angles thereto, and means for passing the web through said printing and drying units.

'5. In a web perfecting rotary printing press, first and second printing units in line with the press, two drying units comprising heating and cooling cylinders located out of line withthe press at right angles thereto, and means for passing the web through said printing and drying units, said means including turning bars around which the web is led on its way to and from the first drying unit.

6. In a web perfecting rotary printing press,

first and second printing units in line with the press, two drying units comprising heating and cooling cylinders located out of line with the press at right angles thereto, and means for passing the web through said printing and drying units, said means'including turning bars around which the web is led on its way to and from both drying units.

HOWARD M. BARBER. 

